Effect of glutathione supplementation on swimmers’ performance

Background and Study Aim. Continuously increasing the volume intensity of training sessions often leads to overtraining. It has been demonstrated that glutathione supplementation might improve aerobic metabolism in skeletal muscle reduce exercise-induced fatigue. The aim study was assess effect on fatigue, recovery processes, competitive results elite swimmers during a six-week period.
 Material Methods. Twenty-four (10 women 14 men) from Bulgarian national swimming team, with mean age 18.7±3.78 years, took part this double-blind placebo control study. experimental group were supplemented once day capsule 250mg glutathione, whilst day. urine concentration levels cortisol cortisone, as well degree overtraining, evaluated 1st(T1), 14th(T2), 28th(T3), 42nd(T4) days. Anthropometric measurements nutritional assessment performed at T1 T4.
 Results. showed gradual decrease cortisone study, significantly lower concentrations vs T4 (19.4 42.5 ng/mL, p < 0.05). At end improvements their time 41 out 43 events, those had smaller (-1.66 -0.97%, 0.05).
 Conclusions. In conclusion, dose 250mg/day for six weeks improves adaptation towards schedules, which is likely lead better sports results.